Hello all, I have a very very serious problem with my iMac, it will not boot OS X at all, it won't even make the startup noise! I was just starting to install Windows XP (I was up to the part where you need to agree to the license agreement) on it when it just shut off for no reason. When I turned the iMac back on it did nothing, just stayed on the grey screen, I didn't even get the startup noise. So I got the Windows XP install disc out of it and have tried everything I can think from trying to do a hardware test (would not work) to trying to reinstall OS X (obversely did not work) of to start OS X up but nothing will work. Does anyone know what else I could do or will I have to send it away to Apple to get this problem fixed? Any help would be greatly appreciated.